Add options for commands

[purrplingcat]

Add linux like options for bot commands.

Example:

!announce edit --message="Test message" --interval=10m --resume

This command args will be parsed as:

[ "edit", ["message", "Test message"], ["interval", "10m"], ["resume", true]]

For better use will be writen tools getOpts()

getOpts() retruns all options as json object structure:

{
  "_args": [ "edit" ],
  "message": "Test message",
  "interval": "10m",
  "resume": true
}